In the terrestrial type a pair of well-developed wings traverse the length of the pitcher; in the tubular or funnelshaped form the wings are narrow or ridge-like.
The corolla is generally funnelshaped, more rarely bell-shaped or tubular; the outer face is often marked out in longitudinal areas, five well-defined areas tapering from base to apex, and marked with longitudinal striae corresponding to the middle of the petals, and alternating with five non-striated weaker triangular areas; in the bud the latter are folded inwards, the stronger areas being exposed and showing a twist to the right.
Long jetties spring out on either side of the entrance, curving round about midway in order to run parallel to the river, thus forming a huge funnelshaped entrance; the eastern jetty forms a landing-stage for passenger traffic and the western is designed for the shipment of bunker and cargo coal.
High, bearing a dozen or more large deflexed, funnelshaped, white, purple-stained flowers; L.
High, with roundish crenate leaves, on long stalks, and white funnelshaped flowers inMarch and April.